Removed named_actor_configs from actor_system
Removed named_actor_configs from actor_system

The member in `actor_system` is unused and redundant with the same
member in `actor_system_config`.

DavadDi/actor-framework,actor-framework/actor-framework,actor-framework/actor-framework,DavadDi/actor-framework,actor-framework/actor-framework,DavadDi/actor-framework,actor-framework/actor-framework,DavadDi/actor-framework